S-Bahn to the west and the disused bridges of the tracks to the former freight yard. Continuing south, the line runs along the former route of the Anhalter line parallel to the S-Bahn. The line has one S-Bahn and three long-distance double-sided platforms on the lower level of Südkreuz station, below the Ringbahn S-Bahn platform. After Südkreuz the line crosses the extensive facilities of the former Tempelhof marshalling yard. The former mainline of the Anhalter railway ran to the west next to the S-Bahn tracks in today's Südgelände Nature Park. The line ends at Südkreuz south end junction, more than a kilometre south of the Südkreuz platforms. The line continues as the Anhalter railway. Nearby there are preparations for the proposed grade-separated junction with the Dresden railway. Also nearby is the freight line connecting the Ring railway with the freight yard at Marienfelde. History In 1882 the Stadtbahn was opened crossing central Berlin east to west. Plans since the beginning of the 20th century for a similar line from north to south for a long time came to nothing. The North-South tunnel built in the 1930s through the city centre only serves the S-Bahn. After the reunification of Germany and Berlin in 1990, a north-south line for mainline trains through Berlin was discussed. The use of the Stadtbahn for mainline trains meant that many connections required a devious route and in addition the limit of its capacity was expected to be reached soon. Among the various options discussed and then adopted was the so-called mushroom concept (German: Pilzkonzept), which provided for a partially underground north-south route, which crossed the Stadtbahn at the Hauptbahnhof. In April 1992, the mushroom concept was added to the Federal Transport Infrastructure Plan. Its core would be a new -long route through the city with a long tunnel. Construction began on 13 October 1995. In 2001, reconstruction began on the Papestraße S-Bahn station, creating the new Südkreuz station. In 2002, construction began on the southern section of the above ground line, originally planned to be opened in 2002. After a series of delays, including flooding in 1997, the track, tunnels and Hauptbahnhof was finally inaugurated on 27 May 2006 and put into scheduled operation a day later. Compared to the original schedule, the project scope has been reduced. A link to the trunk line towards Potsdam was not built. Instead only some structural preparations for a